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Chapter 1
Shelf and Backplane Hardware
1.5 Cable Routing
The narrow and wide cable routing modules (CRMs), attached to the left and right sides of the shelf, can
be used to manage and contain the optical cables as they are routed away from the bay
ships with the narrow CRMs installed, but you can uninstall them and install the wide CRMs as desired.
You can use both CRM types with overhead or under-floor cabling.
The ONS 15600 also provides a fiber channel, located below the shelf at the front of the bay, for cable
routing and storage.
shelf, depending on fiber size.
Table 1-1
Fiber Diameter
1.6 mm (0.6 inch)
2 mm (0.7 inch)
3 mm (0.11 inch)
Plan your fiber size according to the number of cards/ports installed in each side of the shelf.
1.6 Customer Access Panel
The Customer Access Panel (CAP) is located in the middle of the rear of the shelf. The CAP provides
an alarm pin field, timing, and LAN connections. The CAP plugs into the backplane using 2mm Hard
Metric connectors with 752 pins and is held in place with one large captive bolt and multiple screws.
Figure 1-7
The ONS 15600 supports only T1 (100 ohm) building integrated timing supply (BITS).
Note
Table 1-1
provides the maximum capacity of the fiber channel for one side of a
Fiber Channel Capacity (One Side of the Shelf)
Maximum Number
of Fibers Exiting
Each Side
18
16
12
shows the location of the CAP on the back of the shelf.
Cisco ONS 15600 Reference Manual, R7.0
1.5 Cable Routing
.
The ONS 15600
1-7
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